[src/trunk]: src/sys/lib/libsa Make sure we're loading a relocatable binary, ...

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e5f85edfd45f
branches:  trunk
changeset: 828620:e5f85edfd45f
user:      maxv <maxv%NetBSD.org@localhost>
date:      Thu Dec 21 14:28:39 2017 +0000

description:
Make sure we're loading a relocatable binary, to give the user a chance to
correct the kernel name if he mistakenly typed pkboot on a static kernel,
without having to reboot the machine (currently the prekern sees it's a
static kernel and panics).

diffstat:

 sys/lib/libsa/loadfile_elf32.c |  7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diffs (21 lines):

diff -r 2e3924c928d5 -r e5f85edfd45f sys/lib/libsa/loadfile_elf32.c
--- a/sys/lib/libsa/loadfile_elf32.c    Thu Dec 21 12:25:03 2017 +0000
+++ b/sys/lib/libsa/loadfile_elf32.c    Thu Dec 21 14:28:39 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: loadfile_elf32.c,v 1.51 2017/11/15 18:02:37 maxv Exp $ */
+/* $NetBSD: loadfile_elf32.c,v 1.52 2017/12/21 14:28:39 maxv Exp $ */
 
 /*
  * Copyright (c) 1997, 2008, 2017 The NetBSD Foundation, Inc.
@@ -352,6 +352,11 @@
 
        internalize_ehdr(elf->e_ident[EI_DATA], elf);
 
+       if (elf->e_type != ET_REL) {
+               errno = EINVAL;
+               return 1;
+       }
+
        /* Create a local copy of the SECTION HEADERS. */
        shdrsz = elf->e_shnum * sizeof(Elf_Shdr);
        shdr = ALLOC(shdrsz);